package com.lg.config.shiro.realm;

import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authc.LockedAccountException;
import org.apache.shiro.authc.SimpleAuthenticationInfo;
import org.apache.shiro.authc.UnknownAccountException;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.authz.SimpleAuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.apache.shiro.util.ByteSource;
import org.springframework.beans.factory.annotation.Autowired;

import com.lg.dao.UserInfoRepository;
import com.lg.entiry.SysPermission;
import com.lg.entiry.SysRole;
import com.lg.entiry.UserInfo;

public class MyShiroRealm extends AuthorizingRealm {


    public String getName() {
        return "myShiroRealm";
    }
	@Autowired
	private  UserInfoRepository userInfoService;
	
	//授权
	@Override
	protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {
		  System.out.println("权限配置-->MyShiroRealm.doGetAuthorizationInfo()");
		    SimpleAuthorizationInfo authorizationInfo = new SimpleAuthorizationInfo();
		    UserInfo userInfo  = (UserInfo)principals.getPrimaryPrincipal();
		    for(SysRole role:userInfo.getRoleList()){
		        authorizationInfo.addRole(role.getRole());
		        for(SysPermission p:role.getPermissions()){
		            authorizationInfo.addStringPermission(p.getPermission());
		        }
		    }
		    return authorizationInfo;
	}

	//认证
	@Override
	protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
		  System.out.println("MyShiroRealm.doGetAuthenticationInfo()");
		    //获取用户的输入的账号.
		    String username = (String)token.getPrincipal();
		    System.out.println(token.getCredentials());
		    //通过username从数据库中查找 User对象，如果找到，没找到.
		    //实际项目中，这里可以根据实际情况做缓存，如果不做，Shiro自己也是有时间间隔机制，2分钟内不会重复执行该方法
		    UserInfo userInfo = userInfoService.findByUsername(username);
		    System.out.println("----->>userInfo="+userInfo);
		    if(userInfo == null){
		         throw new UnknownAccountException("该账户不存在");
		    }
		    if(userInfo.getState() >3) {
		    	throw new LockedAccountException("用户被锁定");
		    }
		    SimpleAuthenticationInfo authenticationInfo = new SimpleAuthenticationInfo(
		            userInfo, //用户名
		            userInfo.getPassword(), //密码
		            ByteSource.Util.bytes(userInfo.getCredentialsSalt()),//salt=username+salt
		            getName()  //realm name
		    );
		    return authenticationInfo;
	}


	
	
}
